After collecting a sample of fresh spatter, a geologist is silhouetted against a fountain of molten lava spouting from Hawaii's Mauna Ulu.

夏威夷毛纳。乌庐(Mauna Ulu .)活火山喷发形成熔岩喷泉，采集样品的地质学家剪影。

It was found that the solid circulation rate , fountain height and bed pressure drop were all significantly influenced by the bypassing characteristics of the spouting gas.

发现喷动气的旁路现象对粒子循环速率、中心喷泉高度及床层压降都有显著影响。